Keyless combination door-lock.



J. J. SGHAEE'ER.

KEYLESS COMBINATION DOOR LOCK.

APPLICATION rum) APR.21,1911.

1,017,327, Patented Feb. 13,1912.

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J. J. SGHAEPBR. KEYLESS COMBINATION DOOR LOCK.

APPLICATION FILED APR. 21, 1911.

1,017 321 Patented Feb. 13,1912.

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i m G @z u A Q O O O M? I M .Z7v VEN TOR:

Jim c]. Scizczefa;

UNITED srarns OFFIC.

KEYLESS COMBINATION DOOR-LOCK.

To all whom it may concern:

Be it known that I, JOHN J. SCHAEFER, a citizen of the United States,residing at Elgin, in the county of Kane and State of Illinois, haveinvented certain new and useful Improvements in Keyless CombinationDoor-Locks, of which the following is a specification.

My present invention relates to door locks, and my object is to providea novel and simple lock which will operate entirely with a combinationand do away with the use of keys.

lVith this and otherobjects to be hereinafter made apparent, myinvention resides in the features of construction, arrangement andoperation to be now described with reference to the accompanyingdrawings, in which Figure 1 is an elevation of the outside edge portionof a door supplied with my improved lock. Fig. 2 is a similar viewlooking from the inside. Fig. 3 is a plan view of the guide plate to behereinafter specifically described. Fig. 4 is a horizontal sectionthrough the door edge and my improved lock. Fig. 5 is a plan view of thelock case, looking from the inside, showing the bolt and catch releasingmember in position therein. Fig. 6 is a cross-section through the lock,taken on line 33 of Fig. 4, and Fig. 7 is an elevationof the plungerholding plate, looking from the inside.

In applying my improved lock to a door A, I provide said door with acircular opening 0, extending in its outer surface adjacent its edges,said opening being enlarged to form a substantially rectangular cavity(1. upon the inner door surface. Within the circular opening a, extendsa circular plunger-holding plate 1, having an outer circular flange 2,abutting the outer door surface. This plate 1 has a central bore 3 and acircular series of smaller bores 4, each of said bores 3 and 4communicating with a small opening which extends from its base throughthe inner surface of the plate. Mounted within the bore 3 is a boltmoving plunger 5, the reduced stem 6 of which has its inner end beveledas shown in Fig. 4. Mounted in the bores 4 are a series of catchreleasing plungers 7 the reduced stems 8 of which have inner ofisetextensions for a purpose to be hereinafter described. Each of thplungers 5 and 7 is pressed outwardly by Specification of LettersPatent.

Application filed April 21, 1911.

Patented Feb. 13, 1912.

Serial No. 622,516.

a small spring 9 coiled about its stem in the base of its bore.

Mounted over the cavity (4 upon the inner surface of the. door A, is aguide plate 10, shown in detail in Fig. 8, and provided with asubstantially central opening 11, and with openings 12 at opposite sidesof said opening 11, through which fastening members (not shown) extendoutwardly into openings 18 in the inner surface of the plunger holdingplate 1. The guide plate 10 also has straight parallel rows of openings14, inwardly through which extend the inner 0E- set ends of the plungerstems 8. Mounted also upon the inside ofthe door A, to extend over andaround the guide plate 10, is the bolt case 15, which is secured bycorner fastening members 16, extending into the door through cut-outportion 17 in said plate 10, the longitudinal side of said case beingprovided with central offsets to form inner shoulders 18 and a channelbetween said shoulders, in which is mounted to slide the locking bolt19, the outer locking head 20 of which is removably secured to the boltsides so that it may be reversed if necessary. This bolt 19 is normallypressed outwardly by means of a spring 21 within case 15 and bearingbetween the case end and the inner closed bolt end. The sides 22 of thebolt 19, intermediate the bolt ends, are reduced, as particularly shownin Fig. 4, and are provided with series of cut-out portions 23 in theirinner and outer edges to receive the inner offset ends of springcatches, the outer ends of which are secured upon the shoulders 18 ofthe bolt case 15. As shown particularly in Figs. 4 and 6, certain of thespring catches 24 are turned so that they extend within the notches 23of the outer bolt edge, these catches forming the combination, as eachof the catches is alined with, and corresponds to, one of the plungers7. The remaining catches 25 are secured to extend upon the inner edgesof the bolt sides but free of the cut-out portions. Thus when the properplungers are depressed to engage the catches which are in the notchesupon the outer bolt edges, said catches are forced outwardly and thebolt released, but should any one of the other plungers be depressed, itwould strike a catch upon the inner edge of the bolt and force it intoits cut-out portion 23, thus locking the bolt. Intermediate its ends,the bolt 19 is provided with a block 26 secured between its sides 22 andextending at right angles thereto and through the slotted opening 11 ofthe guide plate 10, said block 26 having a beveled end, as particularlyshown in Fig. 4:, to be engaged by the end of the central plunger stem6. In this manner, when the proper ones of the plungers 7 are depressedto release the engaging spring catches 24, the plunger 5 may then bedepressed to force the bolt inwardly and unlock the door.

Mounted in parallel relation to slide along the outer surfaces of thebolt sides 22, is a pair of strips 27 which are connected by transversebars 28. These bars 28 extend through diagonally disposed slots 29 inthe bolt sides 22, which thus cause downward movement of the strips 27when they are moved inwardly. These strips 2-7 are normally forcedoutwardly by a spring 30 connected between the outer bar 28 and the bolthead 20, and are provided with beveled ends which project slightlybeyond the beveled end of the bolt head, whereby when it is desired toclose the door, the said. beveled ends of said strips 27 will strike thekeeper and thus force the strips inwardly and against the catches 25 torelease the same and permit inward movement of the bolt 19.

The bolt case 15 has an intermediate slot 31 through which extends astud 32 having an outer knurled head 33 and an inner cam end 34 locatedoutwardly of the inner bar 28. Thus the door may be unlocked from theinside by turning the stud 32 until its cam end 34: forces the strips 27inwardly and against the catches 24 to release the same. The bolt maythen be moved inwardly by sliding the stud 32 in the slot 31.

While I have shown and described a simple and inexpensive form of myinvention, and one which I prefer, yet numerous changes andmodifications may be made without departing from the spirit thereof, andI wish to reserve all such as fall within the terms of the followingclaims.

I claim:

1. The combination of a bolt case, a bolt slidably mounted in said case,members engaging said bolt to lock the same, plungers mounted to engageand release said bolt engaging members, and a supplemental membermounted to release said bolt engaging members, and having a portionthereof projecting outwardly of the bolt head.

2. The combination of a bolt case, a bolt slidably mounted in said case,members en gaging said bolt to lock the same, plungers extending intothe case from one side to release the bolt engaging members, asupplemental member projecting from the bolt head to automaticallyrelease the bolt engaging members, and means extending into the oppositeside of the case to manually actuate said supplemental member.

8. The combination of a bolt case, a bolt slidably mounted in said caseand provided with notches upon opposite faces, spring catches secured atone of their ends to the case on the inside thereof to coincide with thebolt notches, certain of said catches being extended upon one face ofthe bolt and in engagement with certain of the notches, and certainothers of the catches being extended upon the opposite bolt surface andfree of the notches, and a plurality of plungers extending into the casefrom one side thereof to engage the free ends of said catches.

l. The combination of a bolt case, a notched bolt slidably mounted insaid case, spring catches secured in the case to engage within certainof the notches of the bolt to lock the same, a plurality ofcatch-releasing plungers extending into the case, each of said plungerscoinciding with one of the bolt notches, a member slidably mountedalongside the bolt and having a beveled head extending outwardly of thebolt head, said member being movable toward, and engageable with, thesaid catches, to release the same upon its sliding movement.

The combination of a bolt case, a notched bolt slidably mounted in saidcase, spring catches secured within the case to engage within certain ofthe notches of the bolt to lock the same, a plurality of catchreleasingplungers extending into the 'case, each of said plungers coincidingwit-h one of the bolt notches, a member disposed alongside the bolt,within its case, and provided with a beveled end extending outwardly ofthe bolt head, said member being movable toward, and engageable with,the said catches, to release the same upon its sliding movement, amember movably mounted through a portion of the bolt case, said memberbeing engageable with said sliding member, to slide the same and releaseand move the bolt.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN J. SCHAEFER.

Vitnesses:

WILLIAM B. Vocr, HATTIE TREDER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, I). C.

